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Author
Topic: Gear pump and magnets (Read 8215 times)

I got a gear pump from a oil pump today. Big enoug to fit my magnets on. Inside this pump, there is two gears. One inner with 6 teeth, and one outer with seven teeth. Perfectly matched to make expanding pockets on one side at low pressure, and shrinking pockets on the high pressure side.What I want to check out, is instead of using oil flow to achieve rotation, I want to use magnetic fields as the high and low pressure.To achieve this, the small gear inside will have one magnet on each sides where the same pole, say North, is facing the gear.This way, the six teeth will have South pole around its circumference like a radially magnetized magnet would have.

The large gear with its seven inner gears is surrounded by North facing magnets on one side, and South facing magnets on the other side.

This will result in attraction between inner and outer gear on one side, and repulsuion on the other side.Since the gears are eccentrical, the inner South magnetized gear is forced to "roll" towards the North pole in the outer gear, with repulsion on the other side.

The magnets outside the outer gear is fixed, and the outer gear is free to rotate inside that field. This will keep orientation of North and South fixed even if the outer gear is spinning.

The test is about learning how mahnetic fields behaves in a configuration like this.

I will explain more later, but I attach pictures of the principles.

Pleas ask if you have questions, or comment if you have any suggestions.

Just remember to give it lots of lubrication. They usually run in an oil rich environment. Once did a soap dispenser with one of these. Just had to pull the outer cap once a month and clean up with water and a new piece of gasket. Hand crank on the end and worked great.

Yup. I'll keep it lubricated. Have som silicon oil which is very slippery.Metal parts like these do stick together with lots of friction when they are magnetized.I dont expect a smooth runner, but maybe it's possible to manually turn it around to notice different torque in each direction

Vidar

Logged

Free Energy | searching for free energy and discussing free energy

This design is so stuck by the powerful magnets. It is hard to turn it around, even with lubrication. Without magnets, it is spinning freely.If anyone have an idea of making this smoother, you're welcome to contribute

appropriate use : for the needed use the right magnetic force ( the Flynn brothers searched at first with neodymium and returned to C8/5 ferrit magnets) "the crux" with permanent magnets ( fix force) has the electro magnets(variable force) as solution (or mixed use)

it is ever worthfull to also read cited and citing documents,often you will find estatal(f.e ESA,NASA) and great companies their employees working forward on private developper and inventor their basic finds

appropriate use : for the needed use the right magnetic force ( the Flynn brothers searched at first with neodymium and returned to C8/5 ferrit magnets) "the crux" with permanent magnets ( fix force) has the electro magnets(variable force) as solution (or mixed use)

it is ever worthfull to also read cited and citing documents,often you will find estatal(f.e ESA,NASA) and great companies their employees working forward on private developper and inventor their basic finds

Free Energy | searching for free energy and discussing free energy

Ok. So direction is depending on the direction of polarity.I have one more thought:After analyzing the design, at 12 o'clock it would not be possible to determine which direction the rotor will go. When the rotor is forced ccw it will run ccw for a while, guessing a half cycle, and vica verca.The magnets in the rotor is trying to find equilibrium through the 14 inner iron pieces and the 13 outer ones. At 6 o'clock the pieces starts to line up again, and again the rotor can't decide where to go, ccw or cw.

I have done a simulation on a very similar design in FEMM a few years ago. There is ccw torque ona half cycle, and cw torque the other half which adds up in zero torque in one complete cycle.Another issue is that the polarization did not have any influence in the result. 0 torque in total.

Free Energy | searching for free energy and discussing free energy

I took a look at the second link. The magnets with opposing poles. The difference in force head on vs sliding in.The peak forces are different, but the average force is exactly the same.Try to lift a 1 ton car 10cm straight up. You can't.Roll that car up a ramp while spending 20m distance to roll it up 10cm. That's fine.My point is, when sliding the magnets sideways, you spend more distance around the peak force.

The example of the crankshaft:When the piston like magnet moves up as the sliding magnet approaches, that magnet will under load take time to rise. This increase the initial force. When the sliding magnet leaves, it leaves with less repulsion because the loaded piston magnet needs time to fall down.

That means you need input energy that corresponds 100% with the load.No overunity.

My point is, to be clear; you have more length, rotary or linear to counterforce the slidig magnet.If you plot a graph for both cases, sliding and facing. Then find the area inside the curve over and under the center line.

This area is the product of force and displacement.

You will be surprised that the area in both graphs match perfectly.

Archimedes lifting device makes it manageable to lift water by doing it along a slope instead of lifting it up vertically. Except that his first built "screws" suffered from lots of friction (I have tested a poor replica in Denmark this summer), the applied potetial energy in the water is exactly the same.

This applies to the magnets as well. Sliding the magnet applies a potential energy that is equal to the applied potential energy when facing the magnet.

I have done some more experiments with the magnetic gear assambly.The magnets around the outer gear are further away now.Easier to rotate it together with the inner gear.

I can honestly say that there is still much friction, but much less. However, I can turn the rotors with a ceramic screwdriver inside the open pockets between the rotors.I can easily feel that more force is required to turn the rotors ccw than cw direction.When I flip the magnet which magnetize the inner rotor, I must apply more force in the other direction. In other words, it corresponds to what I expect from the design.

That said, I'm not 100% sure if the rotors some how have more friction one way than the other, depending on polarity of the inner rotor. So now I have printed out a crank that is glued on the outer rotor. I will do the same with the inner rotor.

It remains some more test before I can confirm the final results.

Attached picture was taken during the making of the new gear frame with magnet compartments.